Geo-referencing of aerial imagery using embedded image identifiers
First Claim
1. A method of steganographically embedding auxiliary data in imagery comprising:
- receiving imagery including a first geolocation estimate steganographically embedded therein, wherein the first geolocation estimate corresponds to at least one area depicted in the imagery;
determining a second geolocation estimate, the second geolocation estimate comprising a more precise geolocation estimate, relative to the first geolocation estimate, for the at least one area depicted in the imagery; and
steganographically embedding the second geolocation estimate in the imagery.
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Accused Products
Abstract
Digital watermarking technology is used in conjunction with map data, such as is acquired by satellite and other aerial sensors, and as may be generated from databases based on such aerial data. One implementation is a method of steganographically embedding auxiliary data in imagery. The method includes receiving imagery including a first geolocation estimate steganographically embedded therein. The first geolocation estimate corresponds to at least one area depicted in the imagery. The method further includes determining a second geolocation estimate, the second geolocation estimate comprising a more precise geolocation estimate, relative to the first geolocation estimate, for the at least one area depicted in the imagery, and steganographically embedding the second geolocation estimate, in the imagery.
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Citations
7 Claims
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1. A method of steganographically embedding auxiliary data in imagery comprising:
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receiving imagery including a first geolocation estimate steganographically embedded therein, wherein the first geolocation estimate corresponds to at least one area depicted in the imagery;
determining a second geolocation estimate, the second geolocation estimate comprising a more precise geolocation estimate, relative to the first geolocation estimate, for the at least one area depicted in the imagery; and
steganographically embedding the second geolocation estimate in the imagery. - View Dependent Claims (2, 3)
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4. A method of managing imagery, the imagery passing through at least a first system and being received at a second system, said method comprising:
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receiving the imagery at the second system, the imagery comprising a first digital watermark embedded therein, wherein the first digital watermark was embedded in the imagery by the first system, and wherein the first digital watermark comprises geo-location data associated with at least a first area depicted in the imagery; and
while at the second system, embedding a second digital watermark in the imagery, the second digital watermark identifying at least one of the second system and information associated with a geo-location of at least the first area depicted in the imagery. - View Dependent Claims (5, 6, 7)
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Specification